The bearded eelpout (Lyconema barbatum) is a species of marine ray-finned fish belonging to the family Zoarcidae, the eelpouts. This species is the only species in the monospecific genus Lyconema. It is found in the eastern Pacific Ocean.
| Bearded eelpout | |
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Scientific classification 
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| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Actinopterygii |
| Order: | Scorpaeniformes |
| Family: | Zoarcidae |
| Subfamily: | Lycodinae |
| Genus: | Lyconema Gilbert, 1896 |
| Species: | L. barbatum
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| Binomial name | |
| Lyconema barbatum Gilbert, 1896
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Taxonomy
editThe bearded eelpout was first formally described in 1896 by the American ichthyologist Charles Henry Gilbert with its type locality given as off central California.[1] Gilbert also described a new monospecific genus, Lyconema, when he described the bearded eelpout.[2] This taxon is classified within the subfamily Lycodinae, one of 4 subfamilies in the family Zoarcidae, the eelpouts.[3]
Etymology
editThe bearded eelpout's genus name is a combination of lyco, in reference to Lycodes, meaning that this taxonm is similar to that one, but has its lower jaw furnishes with a dense mass of slender filaments or barbels, nema meaning thread. The specific name barbatum means "bearded" in another allusion to the filaments on the lower jaw.[4]
Description
editThe bearded eelpout has 9 or 10 suborbital bones and a cephalic sensory canal with 9 pores. There are 2 parallel lines of cirri on the lower jaw and. in adults, these often extend back as far as the branchiostegal region. They have 2 fin rays in the pelvic fin. The body is covered in small scales, there are two small pyloric caecae and a lateral line. There are small on sexually dimorphic teeth in the jaws and there are vomerine teeth and palatine teeth.[5] This species attains a maximum published total length of 17 cm (6.7 in).[6]
Distribution and habitat
editThe bearded eelpout is found in the eastern Pacific Ocean from off southern Oregon south to central Baja California, Mexico. It is a demersal fish found at depths between 82 and 373 m (269 and 1,224 ft) over soft substrates consisting of mud or a mix of sand and mud.[6]
References
edit- ^ Eschmeyer, William N.; Fricke, Ron & van der Laan, Richard (eds.). "Species in the genus Lyconema". Catalog of Fishes. California Academy of Sciences. Retrieved 14 November 2022.
- ^ Eschmeyer, William N.; Fricke, Ron & van der Laan, Richard (eds.). "Genera in the family Lycodinae". Catalog of Fishes. California Academy of Sciences. Retrieved 14 November 2022.
- ^ Anderson , M. E. and V. V . Fedorov (2004). "Family Zoarcidae Swainson 1839 — eelpouts" (PDF). California Academy of Sciences Annotated Checklists of Fishes. 34.
- ^ Christopher Scharpf & Kenneth J. Lazara, eds. (6 May 2022). "Order Perciformes Suborder Cottoidea: Infraorder Zoarcales: Family: Zoarcidae". The ETYFish Project Fish Name Etymology Database. Christopher Scharpf and Kenneth J. Lazara. Retrieved 13 November 2022.
- ^ M. Eric Anderson (1994). "Systematics and Osteology of the Zoarcidae (Teleostei: Perciformes)". Ichthyological Bulletin of the J.L.B. Smith Institute of Ichthyology. 60.
- ^ a b Froese, Rainer; Pauly, Daniel (eds.). "Lyconema barbatum". FishBase. June 2022 version.